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6.6=-9+x
We move all terms to the left:
6.6-(-9+x)=0
We add all the numbers together, and all the variables
-(x-9)+6.6=0
We get rid of parentheses
-x+9+6.6=0
We add all the numbers together, and all the variables
-1x+15.6=0
We move all terms containing x to the left, all other terms to the right
-x=-15.6
x=-15.6/-1
x=15+0.6/1
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